Angle block



1,428,509,v y PatentedSept.5',1922

w. H WEINGAR.

ANGLE Block.

APPLICATION FILED FEB. 25, 1920.

@if TM@ Patented Sept. 5, 1922.

1,428,509 oFFicE.

WILLIAM rr. WEINGAE, 0E HART-EFQM. .CONNEQTlCl-l." .ASSGR T0 L.lmflg WHITNEY COMPANY, OE NEW Yonmn. Y., A CORPORATION OE NEw JERSEY.

ANGLE BLOCK;

Appiicaiion inea February 25,` 1920. serial No. 361,366.

To @ZZ whom t may concern.

Be it lznown'that I,- VILLIAM H. WEIN* can, a citizen' of the United States, residing at lVest Hartford, in the county of Hartford.

and State of Connecticut, have invented certainnew and useful Improvements in An` Q'lc Blocks, of which the following is a speci'- fication. f

This invention relates-to an angle block l or attachment, particularly one adapte'dfor use in connection with a planer, shaper, mill-` ing machine or other similar machine, or fork use in inspecting the angles between ,parts of machined articles.

rThe objects of the present invention areV vide means to determine the angle to which' the fixture is adjusted with a high degree' of precision, and further, to provide an( attach-v ment oi' fixture' which will bc simple*7 rdurable and one not easily put out of order.`

Another object 'of the invention is to pro-` vide an angle attachment which may be convcniently used for inspecting angles between parts of articles after they havebeen rma#A chined, in which case the attachment is used independently of any machine.

In the drawing-s I have shown an embodiment of 'the invention which I now .deem preferable, but it isk to`l be understood that changes and modifications :mayv be made within the scope of the appended claims without departing,` from the spirit of the invention. l. i j f c In the figures annexed hereto and forming a part of this specification;

Figurei 1 is a longitudinal view in eleva'- tion of the complete angle attachment and indicating mechanism therefor.

Fig. 2 is an' end 'view of theattachment more clearly showingthe indicating means.

Fig. 3 is a perspective view of the indicating' means in one of its adjusted positions.

Fi L1 is a sectional view in elevation of a part of the indicating means.

ln its entirety the present invention com` prises thief llo`wing principal parts, namely; first, a base plate;-second, an angle member tiltably-mounted' about a shaft mounted in the base plate ;A third, a slide mounted in the base plate and movable in a direction at right angles to the axis ofthe shaft about which the angle member is mounted; and

fourth, connections between the angle member and slidev whereby a given movement of the slide indicates a definite angular movementy of the angle member.'

Referring nowy more particularly to the accompa'ny'ingl drawings in which 1 have shown the preferred embodiment of the prese'nt'invention, 1 refers to the base plate or member suitably finished on its lower surface for engagement with the table of a planer or Iother niachinetool; The base plate or member l is provided with apair of suitable uprigl'i-ts or pedestals2 and 3 horizontally bored as shown at l to contain a short shaft orf-pin 5. Preferably the uprights 2 and 3- are splitat their upper" or free ends and a clamping screw such as shown at 6 f secured in placejso that the shaft 5 may be rigidly clamped to the base' member 1 in any adjusted oblique position.`

' The angle member 10 is suitably finished on its upperfsurface 11 'and may be provided withfan'y suitable number ortypeof T slots 12 for attaching an article to be machined,l but if desired, these Tslots may be omitted in attachments designed primarily for the inspection of articles in which case the surface 11 wouldbe accurately finished to a perfeet plane. Angle inen'iberlO is provided with a projection 13 "adapted to fit between the i'iprights 2 and k3 on the base plate 1 and also is provided with a hole as shown lat la through which the shaft or'pin 5 extends. Preferably the angle member 10 yis permanently fastened to the shaft or pin 5 in any suitable manner,` as by means of taper pins. such as shown at 15 or in any other suitable manner; It will be seen from the above that asiinple and rugged constructionhasbeen provided permitting tilting or adjusting the angle plate 10 about theba'se 1 to any desired angle and securely clamping' it in adjusted position; y j j ln order to accurately determine the angle `to which the member 10 has been ad-k provided suitablysecured'thereto by means of a key 21 and held in place' bythe nut 22 threaded upon'the end of shafty 5. The

periphery f of the druni 20' is accurately ground to a predetermined dimension and is also ground so that it will be accurately concentric with the shaft 5 about which the angle member 10 oscillates. y

lllountedrdirectly below the drum 2O in a suitable dove-tailed lslot or guideway 8O provided in the base member is a slide 31. The slot 30 is at right angles to the axis of the shaft 5 and, as shown, maybe formed in the base member l with an adjustable clamping strip 32 at one side. The slide 31 is adjusted to move easily within the groove 30 and is moved by rotation of the drum and tilting of the angle member in the following manner: A flexible strip such as shown at 35 is made fast at one of its ends to a point in the periphery of the drum 20 and at its other end to an extension 36 provided at one end of the slide 31. Another strip or band 40 is similarly fastened to the drum 20 and to another extension to the slide 31 but arranged so that it will be oppositely disposed to the band 35. The bands preferably are made of thin strips of tempered steel and are of uniform thickness and of suicient flexibility to pass around the drum 20 without undue resistance and without breaking.

The two bands maybe suitably tensioned by any convenient means, that shown in Fig. 4 being found suitable for the purpose. ln this arrangement the extensions 36 at either end of the slide 31 and to which the bands 35' and L10 are attached may be forced away from the slide 3l by means of the screw 50 pressing against a pin 51 provided on the member 36 and extending partly through the slide 31. The extension members 36 are provided at both ends of the slide 31 to each of which one of the flexible bands 35 or 40 is attached. By forcing one of the'projections 36 away from the slide lby adjustment of one of the screws 50 bot-h bands will be equally tightened. l prefer, however, to utilize the projections 86 at both ends of the slide 31 so that the construction will be symmetrical, and by relatively adjusting both projections 36 the slide 3l may be positioned along the guideway 30 for a purpose presently to be described From the above description it will be seen that a definite movement of the slide 31 will indicate a definite angular movement of the an* gle member 10, the movement of each being proportional to the other no matter at what position relative to the base this movement of the angle member takes place.

in order to conveniently measurev the movement of the slide 31 relative to a fixed point in the base plate a plug 60 is rigidly secured to a part of the base member 1 in any convenient manner. In the construe# tion shown an upright support 6l is artached to the base member l through which the plug 60 extends. Mounted on the slide 31 is another plug 65 preferably of the same diameterand lying in an axis parallel to the pin 60. It will be seen, therefore, that the arrangement of the plugs is such that the distance between the plug 60 and 65 may be determined with a high degree of precision either byr applying a micrometer to enclose the plugs or by inserting precision blocks between the two plugs, either method being equally convenient and well adapted to indicate the movement of the slide 31 relative to the plug 60, allowance being made, of course, for the diameters of the plugs.

The top surface of the slide 31 and the bottom of the drum 20 are spaced apart just suflicient to allow for the thickness of the bands 35 and 4:0. Otherwise movement outwardly of the slide 3l would produce an angular movement of the bands which would affect the accuracy of the readings.

lVith the angle member 10 adjusted to its zero or horizontal position by means of an accurate indicator or by any other convenient method the distance between the plugs 60 and 65 is determined. This will be the initial or zero reading of the slide. Movement of one degree or more of the angle member'will be indicated by a definite movement of the slide 31 dependent solely upon the diameter of the drum 2O and thickness of the bands 35 and 40. By knowing the dialneter of the drum 20 and the distance apart of the pins when the angle member is in its zero position the distance between the plugs 60 and 65 may be readily calculated for any desired oblique position of the member 10.

To facilitate the reading of the angle to which the angle member 10 is set the slide 31 is preferably adjusted by means of the adjusting screws 50 so that when the angle member 10 is in its Zero or initial position the distance enclosed by the plugs 60 and 65 is a simple or unitary dimension such as one inch, or 25 millimeters. Furthermore, the diameter of the drum 20, is chosen so that `movement of one degree of the angle member 10 will cause a movement of the slide a distance readily calipered or micrometered. This permits the operator to quickly determine the distance between the plugs 60 and 65 for any desired angle of the angle member 10 and to promptly set his micrometer 0r precision blocks to correspond to this dimension. Should it be desired to use the device for precision angles within limits of small fractions of degrees, a complete table may be prepared indicat ing at a glance the distance between the plugs 60 and 65 for every desired angle.

The above described method of reading the oblique position of the angle member 10 is independent of a dial and pointer, the accuracy of which is determined by the accuracy with which each of the lines is located and also the accuracy with which it may be read is determined by the width of the lines or graduations and by the degree ot accuracy with which the graduations are aligned with the pointer or zero line. ln the present construction the accuracy of the Area-ding is determined entirely by thecare with which the distance between the plugs 60 and 65 is determinedwhich may be read` ily done by methods familiar to mechanics such as calipering or litting precisionL gage blocks between the plugs. i i i yA convenient method of using the angle attachment is to irst determine by calcula# tion or fromv a set of tables previously calculated the distance enclosed by theplugs 60 and 65 il'or the particular desired angle and then after setting a micrometer to cor respond to that distance, adjusting the posi tionot the angle member 10 until the distance between the plugs 60 and 65 corresponds precisely with that micrometer measurement. if desired, the method may be varied by using a set of precision blocks in which the total length' of thebloclrs would be built up to correspond to the calculated distance between the plugs 60 and 65.

i .ll/Vith the angle member 10 adjusted inthe manner above described it maybe securely clamped in that position by means ot the clamping screws 6. y f

` To provide means `to readily rotate the angle member lO aboutthe base member to` any desired position a small gear '70 may be suitably secured to the shaft 5 by means or a key 71. short hole 72 in the base member'adapted to receive a key or wrench. 73 having an eX- tension fitting the hole 72 and *providedl withv a plurality of gear teeth 7 el adapted to mesh with the gear 70. Rotation ot the wrench or key 73 thus serves to very slowlyrotate the angle member l0 to any desired position.

l/Vhat I claim is:

l. A devicel comprising in'combination, a base4 plate, an angle member mounted there'- on, a slide mounted inv said base plate, and means connecting said angle member and slide whereby movement ot said sliderelative to said base plate is proportional tothe angular movement ot said angle member.

2, A device' comprising in combination, Aa base plate, an angle member mounted thereon, a slide mounted in said base plate yand movable transversely therein, and means connecting said angle memberand vslide whereby movement of said vslide relative to said base plate is proportional to the angular movement of said angle member. l i f` 3. A device comprising in combination, av

. Q base plate, an angle member vmounted thereon, a slide mounted inA said base plate,

and ieXible means connecting said r,angle member and slide wherebymovement of said slide relative to said base plate is proportional tothe angular movement o said angle member.

Below the gear is provided ak A. A rdevice comprising in combination, ak

base plate, an angle member rotatably cause -a proportionate movement or said slide. f i. i

A device comprising in combination, a base plate, an angle member rotatably mounted thereon, a slide mounted'y in said base plate, a drum' mounted about the aXis on which the angle member rotates, and deirible means connecting said drum and slide whereby 'they angular movement of said angle member will cause a proportionate movement oit said slide. j

k6. A device comprising in combinatiom-a base plate, an angle member rotatably mounted thereon, a slide mounted in said base plate, a 'drum mounted about the axis on which the angle member rotates, and oppositelyy disposed flexible means connecting said drum and slide` whereby the angular movement ot said angle -member will causeV a proportionate movement or said basev plate, a drum mounted vabout the airis on which the angle memberjrotatemexible means connecting said ldrum and slide whereby the angular movement et said angle member will cause a proportionate movement oit said slide, and means-permitting adk` justinent ot said flexible means.

S. A device comprising in combination, base plate, an angle member rotatably mounted thereon, a drum coanially mounted with said angle member. a slidev mounted transversely iii said base plate, iclexiblemeans connecting said drum and slide, and means associated with said base plate and slide whereby the extent-.oit movement yoil; said slide relative to the base plate'may be determined. Y 9. A device comprising in combination, a base plate, an angle memberfrotatably mounted. thereon, a drum coaiially mounted with said angle member. a slide mounted transversely in sai base plate flexible means connecting said drum'and slide, means permitting adjustment or said tleirible means,

andf'means associatediwith said base plate and slide whereby the extent of movement or said slide relative v'to the base plate .may

be determined.

d'0. A device connorising in combination, a base plate, an angle member mounted thereon, slide mounted in said base inem bei?, `Vmeans connecting said anglefmember and slide whereby movement ot' said slide isproportional to the ang'jularinovemen of saidl angle member, and indicating` means on said base member and slide whereby the extent of movement of said slide relative to the base plate may be determined.

11. A device comprising in combination, a base plate, an angle member mounted thereon, a slide mounted in said `base member, means connecting said angle member and slide whereby movement oit said slide is proportionate to the angular movement of said angle member, a plug mounted in said base, and a plug mounted in said slide parallel to said rst mentioned plug whereby the extent of movement of said slide relative to said base plate may be determined.

12. A device comprising in combination, a base plate, an angle member rotatably mounted thereon, a slide mounted in said base member, means connecting said angle member and slide whereby the extent of linear movement of said slide will determine the extent of angular movement of said angle member, means for rotating said angle member relative to the base plate, and means for clamping said angle member in any adjusted position.

13. A device comprising in combination, a base plate, an angle member rotatably mounted thereon, a slide mounted in said base member, means connecting said angle mem 3er and slide whereby the extent of line ar movement of said slide will determine the extent of angular movement of said angle member, means for adjusting said connecting means, means for rotating said angle member relative to the base plate, and means for clamping said angle member in any ad justed position.

1li.' A device comprising in combination, a base plate, an angle member' rotatably mounted thereon, a slide mounted in said base member, means comprising a drum and a pair of oppositely disposed flexible bands connecting' said angle member` and slide whereby the extent of linear movement of said slide will determine the extent ot' angu- 'la 1 movement of said angle member, means for rotating said angle member relative to the base plate, and means :tor clamping said angle member in any adjusted position.

15. A device comprising in combination, a base plate, an angle member rotatably mounted thereon, a slide mounted. transversely to the axis of rotation of said angle block in said base member, means connectsaid angle member and slide whereby the extent or linear movement of said slide will determine the extent of angular movement of said angle member, means for rotating said angle member relative to the base plate, and. means for clamping said angle member in any adjusted position,

16. A device comprising in combination, a base plate, an angle member mounted thereon, a slide mounted in said base plate, :means connecting said angle member and slide, and means to initially position said slide relative to said base plate.

17. vA device comprising in combination, a base plate, an angle member rotatably mounted thereon, a slide mounted in said base plate, a drum mounted about the axis on which the angle member rotates, flexible means connecting said drum and slide whereby angular movement of said angle member will cause a proportionate movement ot said slide, and means to adjustably secure the llexible means to said slide.

18. A device comprising in combination, a base plate, an angle member rotatably mounted thereon, a slide mounted in said base plate, a drum mounted about the axis on which the angle member rotates, flexible means connecting said drum and slide where" by angular movement of said angle member will cause a proportionate movement of said slide, and means to independently adjust the flexible means at either end of the slide.

19. A device comprising in combination, a base plate, an angle member mounted thereon, a slide mounted in said base plate, means connecting said angle member and slide, and means to initially position said slide whereby the position of said slide relative toy a fixed point in said base plate may be adjusted to an integral number of units of length.

20. A device comprisingl in combination,

a base plate, an angle member rotatably mounted thereon, a drum coaxially mounted with said angle member, a slide mounted transversely in said base plate, llexible means connecting said drum and slide, and means associated with said base plate and slide whereby thek extent of movement of said slide relative to the base plate may be determined, the linear movement of the slide and the angular movement o'fthe angle member being related to each other by a multiple.

21. A device comprising in combination, a base plate, an angle member rotatably mounted thereon, a drum coaxially mounted with said angle member, aslide mounted transversely in said base plate, tlexible means connecting said drum and slide, and means associated with said base plate and slide whereby the extent of movement of said slide relative kto the `base plate may be determined, the linear movement of theslide and the angular movement of the angle member being related to each other by a constant multiple throughout the range of movement of said angle member.

22. A device comprising in combination, a base plate, an angle member rotatably mounted thereon, a slide `mounted in said base plate, a drum mounted about the axis on which the angle member rotates, and means connecting said drum and slide whereby the angular movement of said angle member will cause a proportionate move ment of said slide, the angular movement of the angle member through a unit are being indicated by a movement of thc-:slide equal 5 to a convenient measuring unit.

23. A device Comprising in Combination, a base plate, an angle member mounted thereon, a slide mounted in said base plate, and means connecting said angle member 10 and Slide whereby movement of said slide relative to said base plate is proportional to the angular movement of said angle member, the angular movement of the angle memberfthrough a unit are being` indicated by a movement of the slide equal to a convenient measuring unit.

In. testimony whereof I hereto aHiX my signature. y

WILLIAM H. WEINGAR. y 

